OK, let's crack this. We're given 764 and our task is to multiply it by 8. Essentially, we'll be adding 764 to itself 8 times.
Step 1: 0 + 764 = 764
Step 2: 764 + 764 = 1528
Step 3: 1528 + 764 = 2292
Step 4: 2292 + 764 = 3056
Step 5: 3056 + 764 = 3820
Step 6: 3820 + 764 = 4584
Step 7: 4584 + 764 = 5348
Step 8: 5348 + 764 = 6112

So, 764*8 = 6112